Hydrologically Sensitive Areas Mapping Tool

Soil and Water Lab, Cornell University

If you see highlighted areas on the map:

The sites highlighted on the map are areas of the watershed that we expect to become wet enough to generate overland runoff over the next three days. Because they will transmit water quickly to receiving streams and lakes, these have the highest risk to transport contaminants and cause water quality problems. It is a good idea to avoid potentially-polluting activities in these areas over the next few days.

Activities to avoid in highlighted land:

Keep in mind, these predictions are not perfect. If you know the land around you well, you can probably find some inaccuracies - particularly in areas that have been altered by tile drains. When runoff is predicted, avoid polluting activities in areas of the land that you know to be generally wet even if they don't show up as red here.

Questions and comments

We are very interested in feedback about this site. How can we make it more useful? Are our predictions really wrong in some areas? Are we generally getting the wet areas right near you? We'd love to know what you think. Please contact us with your comments or questions!

Todd Walter mtw5@cornell.edu
Katy Hofmeister klh255@cornell.edu


This watershed has a USGS streamflow gage that allows us to compare modeled streamflow to measured streamflow:


Funding for this project comes from Cornell University and the USDA.

This tool uses data from:

Northeast Regional Climate Center (NRCC)